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Prompt gamma-based neutron dosimetry for Am-Be and other workplace neutron spectra

机译:即时的基于γ的中子剂量测定Am-Be和其他工作场所中子光谱

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A new field-deployable technique for estimating the neutron ambient dose equivalent H~*(10) by using the measured prompt gamma intensities emitted from borated high-density polyethylene (BHDPE) and the combination of normal HDPE and BHDPE with different configurations have been evaluated in this work. Monte Carlo simulations using the FLUKA code has been employed to calculate the responses from the prompt gammas emitted due to the monoenergetic neutrons interacting with boron, hydrogen, and carbon nuclei. A suitable linear combination of these prompt gamma responses (dose conversion coefficient [DCC]-estimated) is generated to approximate the International Commission on Radiological Protection provided DCC using the cross-entropy minimization technique. In addition, the shape and configurations of the HDPE and BHDPE combined system are optimized using the FLUKA code simulation results. The proposed method is validated experimentally, as well as theoretically, using different workplace neutron spectra with a satisfactory outcome.
机译:评估了一种新的现场可部署技术,该技术通过使用从硼酸化高密度聚乙烯(BHDPE)释放出的测得的即时伽马强度以及不同配置的普通HDPE和BHDPE的组合来估算中子环境剂量当量H〜*(10)在这项工作中。已经使用使用FLUKA代码的蒙特卡洛模拟来计算由于单能中子与硼,氢和碳核相互作用而发出的瞬发伽马的响应。这些瞬态伽马响应(估计的剂量转换系数[DCC])的合适的线性组合被生成,以近似于国际放射防护委员会提供的使用交叉熵最小化技术的DCC。此外,使用FLUKA代码仿真结果可以优化HDPE和BHDPE组合系统的形状和配置。使用不同的工作场所中子光谱,实验和理论上都验证了该方法的有效性。

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